lst1 = []
lst2 = [1,2,3]
print(lst1)
print(lst2)

for x in lst2:
    print(x)

lst3 = [1,2,3,4,5,6]
lst4 = ['a','b']
lst3.append('8')
print(lst3)
lst3.extend(lst4)
print(lst3)
lst3.insert(1,12)
print(lst3)
lst3.pop()
print(lst3)
lst3.remove(12)
print(lst3)